HDFS-14456:HAState#prepareToEnterState neednt a lock (#770) Contributed by hunshenshi.
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@ -982,9 +982,9 @@ public class NameNode extends ReconfigurableBase implements
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try {
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initializeGenericKeys(conf, nsId, namenodeId);
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initialize(getConf());
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state.prepareToEnterState(haContext);
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try {
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haContext.writeLock();
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state.prepareToEnterState(haContext);
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state.enterState(haContext);
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} finally {
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haContext.writeUnlock();
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